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Microstructure of Strontium Barium Niobate/Strontium Barium Titanate Composite Ceramics by Powder-Sol Method

Journal of Inorganic and Organometallic Polymers and Materials, ISSN: 1574-1443, Vol: 23, Issue: 4, Page: 855-860
2013
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Article Description

Strontium barium niobate/strontium barium titanate (SBT) composite ceramics with different Nb/Ti ratios, [y(Sr, Ba)NbO/(1 - y)(Sr, Ba)TiO], were fabricated using a Powder-Sol (P-S) method by suspending NbO powders in the sol solution of SBT. The microstructure of composite ceramics was characterized by X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy. Homogeneous and fine-grained composite ceramics were successfully prepared by P-S method. Tetragonal tungsten bronze phase and perovskite phase were revealed co-present in the composite ceramics, whose phase structure was dependent on the pre-sintering temperature and Nb/Ti ratios. The substitution reactions were proposed to explain the formation mechanism of the composite ceramics. © 2013 Springer Science+Business Media New York.

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